Your left leg ain't nearly as straight as it could be at the knee at the time of the release. Try retarding the onset of the hip twist and subsequent actions a bit so that the knee straightens just after the disc leaves for maximum rate of acceleration just after the hit. Currently you're not utilizing the tremendous arm speed of yours like the others said. As you uncock the wrist squeeze harder especially with the index finger and thumb. You could also try different grips to try to maximize your grip strength to eliminate the slight but oh so important early slip.

Your left leg push is powerful and it does twist your hips by momentum but I think you could gain some power by trying to twist the hips harder. Explosively. Generally people gain muscle coordination ability before real muscle strength when starting to practice. I think you have previous practice so it may not last the usual three months of a beginner to start gaining muscle power. Currently I believe your hip twist control ain't the best your nervous system and muscle power can provide. So that's a good goal for conscious monitoring and attention focus. With these changes you should gain major D. The proof lies in GG's arm speed vs yours. You are the clear winner and GG is a D champ. Not too shabby from you

Like I've said before I truly believe you have a 500' throw in you. GG throws farther with less input from the arm for linear portion of the arm swing. Timing may be an issue. Consider that if GG starts from a slower arm speed than you and ends up with less arm speed but gets a larger acceleration late in the throw he may still be generating more force than you. Especially the kind that spins the disc faster. Which makes all the difference. To eliminate that as a possible difference between you a later acceleration and a tighter grip late in the throw should help you in bringing up your spin rate to his level. It's just polishing the slightest final details for you. Perhaps finger power training could help you too.

Flat shots need running on the center line of the tee and planting each step on the center line. Anhyzer needs running from rear right to front left with the plant step hitting the ground to the left of the line you're running on. Hyzer is the mirror of that.

DID: You did get your elbow in front (gosh, I wonder where I heard that before?)

THEN: You could bare down more with your thumb lock and really get a hold of the disc at the rip (SMASH).

BECAUSE: The line of the release will be hinging from the lead elbow positioned to the LEFT. The arc of the arm hinge is left. This creates a PUSH to the left. THIS ALLOWS YOU GRIP EVEN HARDER FOR A HARDER RIP. Effectively allowing a later rip to get the disc on line.

BECAUSE: The disc must swinging INSIDE TO OUT from your chest.

BECAUSE: With a shallow elbow angle you are actually swinging to the right, and must actually SLIP the disc OR RELEASE EARLY to throw it straight.

Instead of just thinking "elbow front" you might try practicing throwing "inside to out" to create a PUSH to the left.

Instead of chopping to 2 o'clock you need to chop to 9:30. Look at Robbie Bratten in that video. That is an exaggerated push.

"The reasonable man adapts himself to his environment. The unreasonable man adapts his environment to himself, therefore all progress is made by unreasonable men."-George Bernard Shaw

Blake is awesome. I am a truly humble student of the Obi Wan Blakobi that is all.

I will make one more recommendation.

Take the winter and learn to start your swing at the hit position.

Look at nearly ALL of the best players. Not all but most. Shultz, Doss, Feldberg, Jenkins, etc. There are lots more. They run up and place the disc in the hit position at 10 oclock and THEN SWING BACK FROM THERE. Then they swing back and hit it at that spot.

1. Start with the disc out in front of your chest2. Cock forward (at the x step) and place the disc where you are going to hit, and get your elbow extended out in front (I mean extended----look at Garret Guthrie)3. COCK BACK from there (wind up using trunk and shoulder muscles)4. Rebound forward (glide forward with momentum)5. Go right back through that position and hit the SHIT OUT OF IT!!!! (pull hard through using muscle-you already know how to do this better than anyone I know)

This is something I am learning myself, and it is a very powerful tool from "pre programming" the perfect hit position. It makes total sense, really.

You do not swing a golf club like Happy Gilmore and run up swinging back, you start from the ball. Swing back then forward to the same spot.

This is more than a positional thing. It is timing thing too. It is real confidence builder. However, it will screw with your form and timing until you get used to it. You will be all over the place. Trust me. I have been really having trouble because I am used to using my off arm a lot late in the throw. I realize now how bad this is screwing my potential. I "place" I do not "swing".

Take few months and learn it.

"The reasonable man adapts himself to his environment. The unreasonable man adapts his environment to himself, therefore all progress is made by unreasonable men."-George Bernard Shaw

I don't think anyone except perhaps Aaron himself doubts that sometime soon he will. And then we except the biggest guns here can put in their signatures On the other hand you probably won't need to once you heal your back and get the final adjustments down.

I second everything Bradley said.

Flat shots need running on the center line of the tee and planting each step on the center line. Anhyzer needs running from rear right to front left with the plant step hitting the ground to the left of the line you're running on. Hyzer is the mirror of that.